Satellite measurements show how sea level is changing around the world.

Earth’s rising seas are some of the most visible signs of our warming planet. Over the last 23 years, NASA satellite missions have observed a steady rise in global sea levels as polar ice sheets melt. Since 1992, seas around the world have risen an average of nearly 3 inches. As Earth continues to warm, new research suggests sea levels could rise by as much as several feet in the next 100 years. Sea level rise is one of the biggest environmental challenges of the 21st century, and NASA research is helping us understand how much our oceans will rise, and how fast that will happen. Watch the video to learn more.